Difference in Taste Between the Right and Left Sides of Tainted Fish

1979 ◽  
Vol 36 (11) ◽  
pp. 1412-1413
Author(s):  
A. J. Liem ◽  
V. A. Naish
Keyword(s):  
Rainbow Trout ◽  
Key Words ◽  
Kraft Pulp ◽  
Pulp Mill ◽  
Control Fish ◽  
Salmo Gairdneri ◽  
Kraft Pulp Mill ◽  
Key Words Fish ◽  
The Right ◽  
And Control

More tainting was found on the left than on the right side of rainbow trout (Salmo gairdneri) that were exposed to a kraft pulp mill "foul condensate." This sidedness was deduced from the results of the triangle taste test used to detect differences between exposed and control fish, and was observed when the tainting was moderate, in the range of effluent concentrations of 0.015–0.046% by volume. Key words: fish, tainting, taste, rainbow trout.

Some Toxic Constituents of Chlorination-Stage Effluents from Bleached Kraft Pulp Mills

1981 ◽  
Vol 38 (7) ◽  
pp. 739-743 ◽  
Author(s):  
A. B. McKague
Keyword(s):  
Gas Chromatography ◽  
Rainbow Trout ◽  
Kraft Pulp ◽  
Pulp Mill ◽  
Salmo Gairdneri ◽  
Pulp Mills ◽  
Juvenile Rainbow Trout ◽  
Bleached Kraft Pulp ◽  
Toxic Materials ◽  
Kraft Pulp Mills

Constituents responsible for the toxicity of a sample of bleached kraft chlorination-stage effluent to juvenile rainbow trout (Salmo gairdneri) were investigated. Tetrachlorocatechol, 3,4,5-trichlorocatechol, and 2,6-dichlorohydroquinone were identified and evidence was obtained for the presence of other chlorodihydroxybenzenes in toxic acidic fractions of the sample. Concentrations of 0.46 mg/L 3,4,5-trichloro- and 0.74 mg/L tetrachloro-catechol were estimated in the sample by analytical gas chromatography. Toxic materials in the nonacidic fraction were not identified although the nontoxic dichloromethyl methyl sulfone was isolated.Key words: chlorination-stage effluent, toxicity, pulp mill, chlorocatechols, chlorodihydroxybenzenes

Histopathology of rainbow trout exposed to a bleached kraft pulp mill effluent

1988 ◽  
Vol 17 (3) ◽  
pp. 319-323 ◽  
Author(s):  
C. M. Couillard ◽  
R. A. Berman ◽  
J. C. Panisset
Keyword(s):  
Rainbow Trout ◽  
Kraft Pulp ◽  
Pulp Mill ◽  
Pulp Mill Effluent ◽  
Kraft Pulp Mill ◽  
Bleached Kraft Pulp

Acclimation-Induced Change in Toxicity of Aluminum to Rainbow Trout (Salmo gairdneri)

1986 ◽  
Vol 43 (1) ◽  
pp. 243-246 ◽  
Author(s):  
P. L Orr ◽  
R. W. Bradley ◽  
J. B. Sprague ◽  
N. J. Hutchinson
Keyword(s):  
Rainbow Trout ◽  
Atmospheric Deposition ◽  
Surface Waters ◽  
Environmental Changes ◽  
Aluminum Concentration ◽  
Control Fish ◽  
Salmo Gairdneri ◽  
Total Hardness ◽  
The Third ◽  
And Control

When a group of rainbow trout (Salmo gairdneri) fingerlings was exposed to 87 μg Al/L for 1 and 2 wk, their threshold lethal concentration (LC50) increased to about 1.8 times the control LC50 of 175 μg Al/L. Raising sublethal exposure to 154 μg/L during the third week resulted in a similar ratio of 1.7 between LC50s of previously exposed and control fish. Thus, prior exposures of 0.5 and 0.9 of the control LC50 resulted in about the same increase in tolerance. The magnitude of the increase was similar to those reported in the literature for other metals. Such acclimation could assist in the survival of fish during spring and autumn surges of aluminum and other metals in surface waters acidified by atmospheric deposition of oxides of sulfur and nitrogen; those environmental changes in aluminum concentration parallel the concentrations used in this research. Experimental water simulated an acid lake with pH of 5.1–5.3 and total hardness of 11 mg/L.

Effluent reduction and control of non-process elements towards a cleaner Kraft pulp mill

1999 ◽  
Vol 1 (4) ◽  
pp. 264-277
Author(s):  
G. Parthasarathy ◽  
G. Krishnagopalan
Keyword(s):  
Kraft Pulp ◽  
Pulp Mill ◽  
Kraft Pulp Mill ◽  
Process Elements ◽  
And Control

Formation and degradation of mutagens in kraft pulp mill water systems

1990 ◽  
Vol 5 (3) ◽  
pp. 142-147 ◽  
Author(s):  
Annika Smeds ◽  
Bjarne Holmbom ◽  
Åbo Akademi ◽  
Leena Tikkanen
Keyword(s):  
Kraft Pulp ◽  
Pulp Mill ◽  
Water Systems ◽  
Kraft Pulp Mill

The manufacture of sulfur-free alkali in a kraft pulp mill

1990 ◽  
Vol 5 (3) ◽  
pp. 126-133
Author(s):  
Per Ulmgren ◽  
Rolf Lindstrom
Keyword(s):  
Kraft Pulp ◽  
Pulp Mill ◽  
Free Alkali ◽  
Kraft Pulp Mill

Occurrence of Various Off-Flavours in Fish in Finland from 1969 to 1981

1983 ◽  
Vol 15 (6-7) ◽  
pp. 47-58 ◽  
Author(s):  
T Kuusi ◽  
M Suihko
Keyword(s):  
Research Laboratory ◽  
Kraft Pulp ◽  
Pulp Mill ◽  
Northern Pike ◽  
Research Centre ◽  
Pulp Mill Effluent ◽  
Technical Research ◽  
Kraft Pulp Mill ◽  
Food Research ◽  
Numerical Scale

Off-flavours in fish were studied from 1969 to 1981 at the Food Research Laboratory of the Technical Research Centre of Finland using sensory methods. In all, 1982 samples of 18 species of Finnish fish, most of them suspected of being tainted, were studied. A trained taste panel scoring on a numerical scale of 0-10, where a score of 5 or less was unacceptable, was used. The off-flavours described were oil, kraft pulp mill effluent, sewage (musty), muddy, rancid, and others. Of all these samples, 34.9% were unacceptable. The most common off-flavour was kraft pulp mill effluent, present in 41.2 % of the unacceptable samples. In acceptable fish slight off-flavours were somet imes found. Of the muddy fish, only 35.2 % of the bream and 28.8 % of the northern pike were unacceptable. The panel was able to discriminate between the different off-flavours, but, in some cases, the boundaries were vague.

Characterization of odorous compounds from bleached kraft pulp mill effluent

1995 ◽  
Vol 31 (11) ◽  
pp. 35-40 ◽  
Author(s):  
B. G. Brownlee ◽  
S. L. Kenefick ◽  
G. A. MacInnis ◽  
S. E. Hrudey
Keyword(s):  
Gas Chromatography ◽  
Kraft Pulp ◽  
Pulp Mill ◽  
Dimethyl Disulfide ◽  
Gas Chromatography Mass Spectrometry ◽  
Pulp Mill Effluent ◽  
Kraft Pulp Mill ◽  
Bleached Kraft Pulp ◽  
Methyl Phenyl Sulfide ◽  
Library Spectrum

Odour compounds in extracts of bleached kraft pulp mill effluent (BKME) have been characterized by olfactory gas chromatography (OGC) and gas chromatography-mass spectrometry. A variety of sulfury odours was detected by OGC in addition to woody and pulp mill-like odours. Three sulfur compounds were identified by comparison of retention times and partial mass spectra with authentic standards: dimethyl disulfide, 3-methylthiophene and thioanisole (methyl phenyl sulfide). Typical concentrations in BKME were 1, 0.05, and 0.5 μg/l, respectively. Their odour intensity is relatively low and they were not detected by OGC. Dimethyl trisulfide was tentatively identified by comparison of its partial mass spectrum with a literature (library) spectrum. Its concentration in BKME was estimated at 0.5-2 μg/l. It corresponded to a skunky odour in the OGC profiles. Efforts to identify another odour peak, eluting just after 3-methylthiophene, with a pronounced alkyl sulfide odour were unsuccessful.

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